Home / 115,288.60-172,932.90-68,517.40

Finding the Fourth Proportional to 115,288.60, 172,932.90 and 68,517.40

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Solution

The fourth proportional to 115,288.60, 172,932.90 and 68,517.40 is: 102,776.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,288.60 : 172,932.90 = 68,517.40 : x
  2. Step 2: Convert to fraction form
    115,288.60/172,932.90 = 68,517.40/x
  3. Step 3: Cross multiply
    115,288.60x = 172,932.90 × 68,517.40
  4. Step 4: Simplify right side
    115,288.60x = 11,848,912,682.46
  5. Step 5: Solve for x
    x = 11,848,912,682.46/115,288.60
  6. Step 6: Final answer
    x = 102,776.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.